JPH0678113B2 - Refueling device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a refueling device that includes one or a plurality of weighing machines and a sales management machine, and that performs preset control on the sales management machine side.

[Prior art]

Generally, this type of oil supply device has a pump, one end of which is provided in the middle of a pipe, for starting and stopping liquid supply by a pump motor, a flow meter for measuring the amount of oil supplied by the pump, and the flow rate. An indicator that displays the amount of refueling measured by a meter, a refueling nozzle that is connected to the other end of the pipe via a hose and that discharges oil liquid to the fuel tank of the vehicle, and the start and end of refueling work by the refueling nozzle. Nozzle switch (for fixed-type weighing machine) or lift switch or cam switch for up-down detection (for hanging-type weighing machine)
While having a weighing machine equipped with a refueling operation detection means such as, and the like, connected to the weighing machine via a signal line, a function of calculating a weighing signal based on the measurement result of the flow meter as a refueling amount, and at the time of preset refueling It has a sales management machine having a function of setting a desired preset value and outputting a refueling stop signal when the refueling amount reaches a predetermined value, and at the time of preset refueling, the pump is operated by the refueling stop signal from the sales management machine. The pump motor attached to, or if necessary, the operation of the liquid feeding means such as an electromagnetic valve provided in the middle of the pipe is stopped.

The timing of stopping the pump motor drive, closing the solenoid valve, etc. during preset refueling considers the excess amount,
In order to carry out at a predetermined value slightly before the preset value, the refueling stop signal is output at the predetermined value.

At this time, even if the same weighing machine is used, the actual running amount may fluctuate by a minute amount within the range of the measurement allowable error (instrumental error) due to changes in the lubrication environment based on temperature, viscosity, etc.
The sales management machine issues a refueling slip as if the actual refueling amount is equal to the preset value when the actual refueling amount and the preset value are within the allowable measurement error range.

[Problems to be solved by the invention]

However, in the above conventional technology, the metering machine side displays the actual oil supply amount measured by the flowmeter on the display, and the sales management machine side calculates and displays the oil supply amount based on the metering signal from the metering machine. At the same time, if the actual refueling amount is within the allowable measurement error range with respect to the preset value, the preset value is printed as the refueling amount on the refueling slip.

As a result, the display value on the weighing machine side may differ from the refueling amount value on the refueling slip, which gives the customer a feeling of distrust.

The present invention has been made to improve such problems,
When it is judged that the refueling work this time is preset refueling,
It is an object of the present invention to provide a fueling device that eliminates distrust of customers by displaying the same value as the preset value on the display of the weighing machine.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a liquid feeding means for starting and stopping the liquid feeding, a measuring means for measuring the amount of oil supplied by the liquid feeding means, and the measuring means. Display means for displaying the amount of refueling measured by the discharging means, discharging means for discharging the oil liquid fed by the liquid feeding means, and refueling work detecting means for detecting the start and end of the refueling work by the discharging means. With a weighing machine provided with, the function of calculating a weighing signal based on the measurement result of the measuring means as a refueling amount, which is connected to the weighing machine via a signal line, and sets a desired preset value at the time of preset refueling, This sales management machine has a function of outputting a refueling stop signal when the refueling amount by refueling reaches a predetermined value that is smaller than the preset value by an amount equivalent to the passing amount, and at the time of preset refueling, the sales management machine is provided. A fuel supply apparatus that allowed to stop the feeding means by fueling stop signal al.

The feature of the configuration adopted by the present invention is that the weighing machine side monitors the input of a refueling work end signal from the refueling work detection means and a refueling stop signal from the sales management machine, Is input first, the preset refueling determination means determines that the current refueling is preset refueling, and when the preset refueling determination means determines that the current refueling is preset refueling, the preset value is based on the refueling amount by the measuring means. A preset value prediction means for predicting
It is provided between the measuring means and the display means, and when the preset refueling discriminating means discriminates the refueling this time as preset refueling, the display value of the display means is stepped to the preset value predicted by the predicting means, The display control means for holding the preset value is provided.

[Action]

At the time of preset refueling, after setting a desired preset value on the sales management machine side, the refueling work is started by operating the discharging means on the weighing machine side, and the oil liquid is discharged from the discharging means via the liquid feeding means and the measuring means. Is ejected.

The oil liquid sent by the liquid sending means is measured by the measuring means, and the measurement signal at this time is output to the sales management machine through the signal line and calculated as the amount of oil supply.

Then, the sales management machine continues the calculation of the refueling amount, and outputs the refueling stop signal to the weighing machine side when the refueling amount by refueling this time reaches a predetermined value which is smaller than the preset value by an amount corresponding to the passing amount. , Stop the liquid feeding means.

Now, on the side of the weighing machine, preset refueling determination means, preset value prediction means, and display control means are provided.

The preset refueling determination means monitors the input of the refueling work end signal from the refueling work detection means and the refueling stop signal from the sales management machine, and when the refueling stop signal is input first, the current refueling Judge as preset refueling.

In this way, when preset refueling is executed and the preset refueling determination means determines that the current refueling work is preset refueling, the preset value prediction means is preset based on the actual refueling amount by the measuring means. Predict preset values.

As a result, the display control means advances the display value of the display means to the preset value predicted by the predicting means, and holds the display value so as to match the preset value.

〔Example〕

Hereinafter, the case where the oil supply device of the present invention is applied to a fixed type oil supply device will be described in detail based on an embodiment shown in the drawings.

FIG. 1 shows an overall configuration diagram of a refueling device used in this embodiment. In FIG. 1, 1 is one or a plurality of weighing machines provided on the premises of a gas station, and 2 is a weighing machine. A pump 4 and a flow meter 5 driven by a pump motor 3 are provided in the middle of the pipe 2 in the installed pipe, and a flow rate pulse transmitter 6 for transmitting a flow rate pulse proportional to the flow rate to the flow meter 5 is provided. Is installed. Further, on the front surface of the measuring device 1, there is provided a lubrication amount indicator 7 for cumulatively displaying the lubrication amount.

Reference numeral 8 is a hose whose proximal end side is connected to the pipe 2, 9 is a refueling nozzle provided on the front end side of the hose 8, and by opening the refueling nozzle 9, oil liquid can be discharged to a fuel tank. It has become. Reference numeral 10 denotes a nozzle housing portion provided on the side surface of the weighing machine 1, and the oil supply nozzle 9 is adapted to be detached from the nozzle housing portion 10.
A nozzle switch 11 is provided which opens and closes in conjunction with the engagement / disengagement, and outputs a nozzle switch signal indicating that refueling work is being performed during closure.

12 is a sales management machine, which is usually called "POS", installed in the office of the gas station, or in an office machine box outside, and the sales management machine 12 is a card reader 13 for reading a card, and a preset value for preset refueling. Numeric keypad 14 to set or enter the amount when selling the product, product key 15 to specify the product name when supplying oil other than gasoline, air supply, tire replacement, etc., to specify when there are multiple weighing machines 1. It comprises a weighing machine selection key 16, a printer 17 for issuing a receipt after the end of refueling or after the sale of goods, a display 18, etc., and is connected to the weighing machine 1 via a signal line 19. Here, the sales management machine 12 has a function of presetting the amount of refueling by operating the ten-key 14 at the time of preset refueling, reading a card by the card reader 13 or operating the metering selection key 16 to the refueling start permission signal to the weighing machine 1. Is output at the rising of the refueling permission signal from the “L” to the “H” state, and thereafter outputs the refueling permission signal in the “H” state until the refueling stop signal is output.
At the time of preset refueling, in consideration of the amount of passage due to inertial rotation between when the pump motor 3 is deenergized and when it stops, a refueling stop signal is sent when a predetermined value slightly before the preset value is reached. The output of the refueling permission signal is stopped on the basis of the function to output at the fall to the “L” state and the refueling work end signal obtained by the fall of the nozzle switch signal during normal refueling, and the refueling stop signal at the fall. In addition to the function of outputting the value and the function of calculating the weighing signal from the weighing machine 1 as the amount of refueling, a sales totalizing function, a printer function and the like are provided. The configuration, functions, etc. of the sales management machine 12 are conventionally known.

Further, FIG. 2 shows a specific configuration of the control circuit 20 used in this embodiment, and the control circuit 20 is built in the weighing machine 1. The control circuit 20 is composed of an input / output circuit 21, a lubrication amount counting circuit 22, a preset lubrication determination circuit 23, a preset value prediction circuit 24, a display control circuit 25, a pump motor control circuit 26 and the like.

Here, the input / output circuit 21 outputs a nozzle switch signal from the nozzle switch 11 to the sales management device 12 and a nozzle switch signal output circuit 21A and a weighing signal from the refueling amount counting circuit 22 to the sales management device 12. It is composed of a signal output circuit 21B and a refueling permission signal input circuit 21C for inputting a refueling permission signal from the sales management machine 12.

The refueling amount counting circuit 22 counts the flow rate pulse from the flow rate pulse transmitter 6 as a refueling amount and preset preset refueling determination circuit 23,
It outputs to the preset value prediction circuit 24 and the display control circuit 25, and also outputs the weighing signal to the weighing signal output circuit 21B.

The preset refueling determination circuit 23 receives the nozzle switch signal from the nozzle switch 11 and the refueling permission signal from the sales management machine 12, and the refueling stop signal obtained by the fall of the refueling permission signal is input first. At this time, it is determined that the refueling is preset refueling, and the display control instruction signal is output to the preset value prediction circuit 24 and the display control circuit 25.
The discriminating circuit 23 performs the processing operation shown in FIG.
Determine the preset refueling.

The preset value prediction circuit 24, when the display control instruction signal is input from the preset refueling determination circuit 23, reads the refueling amount counted by the refueling amount counting circuit 22 and predicts the preset value set by the sales management machine 12. Then, the predicted preset value is output to the display control circuit 25. The prediction circuit 24 sets the prediction preset value by the processing operation shown in FIG.

Further, the display control circuit 25 has a function of resetting the previous display value to zero upon rising of the nozzle switch signal to the "H" state at the time of the next refueling, and a preset refueling determination circuit during normal refueling or preset refueling. Until the display control instruction signal is input from 23, the lubrication amount counting circuit 22
The function of displaying the refueling amount signal from the refueling amount indicator 7 via the indicator driving circuit 27, and the display value of the refueling amount indicator 7 from the preset value prediction circuit 24 when the display control instruction signal is input. It also has the function of stepping up to the input predicted preset value or holding the display value at the preset value. The display control circuit 25 executes the above-mentioned functions by the processing operation shown in FIG.

Further, the pump motor control circuit 26 controls the start and stop of the pump motor 3 via the pump motor drive circuit 28, that is, the input of the oil supply permission signal from the sales management machine 12 and the nozzle switch signal from the nozzle switch 11. The pump motor 3 is operated under the AND condition. Therefore, at the time of preset refueling, the pump motor 3 is stopped when the refueling stop signal is output from the sales management machine 12.

The present embodiment is constructed in this way, and its operation will now be described with reference to FIGS. 3 to 5.

First, the operation during normal refueling will be described.

In this case, the customer's card to be refueled (in the case of a general customer, the card at the gas station) is used as the card reader of the sales management machine 12.
When there are a plurality of weighing machines 1, the weighing machine selection key 16 is pressed. As a result, the refueling permission signal is output from the sales management machine 12, and the pump motor control circuit 26 is placed in a startable state.

Next, when the fueling nozzle 9 is removed from the nozzle housing portion 10 to refuel the vehicle fuel tank, the nozzle switch 11 is closed and a nozzle switch signal is output. As a result, the nozzle switch signal is input to the pump motor control circuit 26, a motor drive signal is output from the pump motor drive circuit 28 to the pump motor 3 via the control circuit 26, and this is activated. Further, the previous display value of the fuel amount indicator 7 is reset to zero by the nozzle switch signal.

Therefore, when the worker opens the refueling nozzle 9, the oil liquid in the underground tank is discharged from the refueling nozzle 9 through the pipe 2, the pump 4, the flow meter 5, and the hose 8. Then, the flow rate at this time is measured by the flow meter 5, a flow rate pulse is transmitted from the flow rate pulse transmitter 6, and is input to the oil supply amount counting circuit 22. As a result, the refueling amount counting circuit 22 counts the flow rate pulses and outputs a counting signal to the refueling amount display 7 via the display control circuit 25 and the display driving circuit 27 to display the refueling amount Q as the display value D. At the same time, the flow rate pulse is converted into a measurement signal, which is output to the sales management machine 12. The sales management machine 12 calculates the measurement signal as a refueling amount.

During this period, the preset refueling determination circuit 23 waits for a refueling stop signal to be input from the sales management device 12, but in normal refueling, this refueling stop signal is not input during refueling, so The preset refueling determination circuit 23 only executes the waiting loop of step S10 in FIG. Further, since the display control instruction signal is not input from the preset refueling determination circuit 23, the preset value prediction circuit 24 only executes the waiting loop of step S20 in FIG. Further, since the display control instruction signal is not input also to the display control circuit 25, steps S30 to S in FIG.
35 is executed, and the refueling amount display 7 displays the refueling amount Q on the display value D.
Is only displayed as.

In this state, when the refueling progresses and the desired refueling amount Q is reached, the refueling nozzle 9 is closed and the refueling nozzle 9 is hung on the nozzle housing portion 10. Therefore, the nozzle switch 11 is opened and the output of the nozzle switch signal is stopped, and this falling state is input to the pump motor control circuit 26 and the sales management machine 12 as a refueling operation end signal. Thus, the output of the refueling permission signal from the sales management machine 12 is stopped, and the pump motor control circuit
The output of the motor drive signal from 26 is also stopped, and a series of refueling work is completed. Finally, the worker may give the customer a refueling slip issued from the printer 17 of the sales management machine 12.

Next, the operation during preset refueling will be described.

In this case, before inserting the card into the card reader 13 of the sales management device 12 or after inserting the card, use the numeric keypad.
The user operates 14 to preset the desired refueling amount or amount desired by the customer, and stores this preset value.

Next, as in the case of normal refueling, the refueling nozzle 9 is removed from the nozzle housing 10 and inserted into the fuel tank to open the valve. At this time, the lever of the oil supply nozzle 9 is hooked on the hook to keep the valve open state.

When the refueling progresses and the refueling amount Q reaches a predetermined value slightly before the desired preset value, the output of the refueling permission signal from the sales management machine 12 is stopped. The falling state of the refueling permission signal becomes a refueling stop signal, and the refueling stop signal is input to the pump motor control circuit 26 and the preset refueling determination circuit 23. Then, the refueling stop signal is the pump motor control circuit.
By being input to 26, the output of the motor drive signal is stopped, and the pump motor 3 is stopped after a slight inertia rotation. Therefore, even if the oil supply nozzle 9 is open, the discharge of the oil liquid is stopped, and the preset oil supply with the desired preset value has been performed.

Further, when the worker visually recognizes that the display of the oil supply amount indicator 7 has stopped, the operator closes the oil supply nozzle 9 and hangs it on the nozzle housing portion 10, thereby completing a series of preset oil supply. Finally, the worker may give the customer a refueling slip issued from the printer 17 of the sales management machine 12.

However, as described above, when the print value of the refueling slip issued by the sales management machine 12 and the display value D of the refueling amount display 7 do not match, the customer is distrusted.

Therefore, in the following, the operation for matching these two values,
That is, the operation for controlling the display of the display value D of the oil supply amount indicator 7 as the preset value when the preset value and the actual oil supply amount are in the range of the measurement permission error will be described.

First, the preset refueling determination circuit 23 determines whether or not preset refueling is performed by the processing operation of FIG. That is,
When the refueling stop signal is input to the preset refueling determination circuit 23, the determination circuit 23 proceeds from step S10 to step S11 to compare whether or not the nozzle switch 11 is closed and the nozzle switch signal is input. If the nozzle switch signal has not been input, the refueling stop signal causes the refueling nozzle 9 to be placed in the nozzle housing portion 10, and is determined to be the refueling work end signal when the normal refueling has ended, and the processing ends. On the other hand, if the nozzle switch signal is being input in step S11, the refueling stop signal is determined to be a fixed stop signal due to preset refueling,
In the next step S12, display control instruction signals are output to the preset value prediction circuit 24 and the display control circuit 25, respectively. Then, this display control instruction signal is released when the output of the nozzle switch signal is stopped, and prepares for the next refueling operation (see steps S11 to S13, S16).

Note that steps S13 to S16 in FIG.
As disclosed in Japanese Patent No. 42197, a method of performing preset lubrication while repeatedly starting and stopping the pump motor several times in the middle when refueling a preset value (hereinafter, such a preset lubrication method is referred to as an "intermediate stop method"). ) Is the escape loop. That is, when the refueling stop signal is input and the display control instruction signal is output, the nozzle switch signal is still input, and when the refueling permission signal is input again after a certain time (step S14), the preset refueling is performed. Is resumed, and the display control instruction signal is released (step S15).

Next, when the display control instruction signal is input to the preset value prediction circuit 24 from the preset refueling determination circuit 23, the prediction circuit
24 predicts the predicted preset value P by the processing shown in FIG. That is, when the display control instruction signal is input in step S20, the refueling amount Q is read from the refueling amount counting circuit 22 (step S21), and the true preset value set by the sales management machine 12 is predicted and set (step S22). , And outputs this value to the display control circuit 25. Specifically, if the refueling amount Q is 29.97l, the predicted preset value P is 30l, and the refueling amount Q is 25.02l.
If so, the prediction preset value P is predicted to be a value excluding a minute amount in the range of the measurement allowable error such as 25 l. When the input of the display control instruction signal from the preset refueling determination circuit 23 is canceled (steps S16 and S15 in FIG. 3).
Then, the setting of the predicted preset value P is canceled (steps S23 and S24).

Further, from the preset lubrication determination circuit 23 to the display control circuit 25
When a display control instruction signal is input to the display control circuit 25,
Is the display value D on the refueling amount display 7 by the processing shown in FIG.
The display control is performed so that is equal to the predicted preset value P. That is, when the display control instruction signal is input in step S32, the display control circuit 25 reads the predicted preset value P from the preset value prediction circuit 24 (step S36). And
In the next step S37, when the display value D of the refueling amount indicator 7 is smaller than the predicted preset value P, step control is performed so that the two agree with each other, and conversely, the refueling amount counting circuit 22 still outputs the counting signal (flow rate). If the pulse) continues to be input, the stepping of the display value D by the count signal is blocked, and the display value D is held and controlled so as to match the predicted preset value P. In this way, if the input of the display control instruction signal is not canceled (step S38) and the input of the nozzle switch signal is stopped (step S39) while the coincidence control is executed, the preset refueling work has been completed. And the display control ends.

When the input of the display control instruction signal is canceled while the nozzle switch signal is being input, and the process proceeds to step S40, it is determined that the preset lubrication is based on the intermediate stop system, and the pump motor 3 is repeatedly stopped on the way. In order to prevent the accumulation of the discrepancy between the actual refueling amount Q and the display value D within the range of the measurement permissible error, the processing of steps S40 to S43 is performed each time refueling is restarted, and the refueling amount Q and the display value are When it matches with D, the process proceeds to step S34, and the display of the refueling amount Q is restarted.

As described above, according to the present embodiment, the display value of the refueling amount display 7 can be controlled so as to match the preset value in accordance with the slip issuing process performed on the sales management machine 12 side. It is possible to increase the trust of customers.

In the embodiments of the present invention, the pump motor 3 and the pump 4 are described as the liquid feeding means for starting and stopping the liquid feeding, but a solenoid valve provided in the middle of the pipe 2 may be used. Good. Moreover, although the fixed type weighing machine is given as an example of the weighing machine 1, a suspended type weighing machine may be used in which a refueling nozzle is suspended from a high place of a gas station through a hose so as to be able to move up and down. In this case, the refueling work detection means is the nozzle switch.
Instead of 11, a nozzle elevating switch, an elevating detection cam switch, etc. may be used to detect between the refueling position and the standby position. Further, the set value at the time of preset refueling is not limited to the refueling amount, but may be the refueling amount.

〔The invention's effect〕

The refueling device according to the present invention is as described above in detail. Even if the refueling device is of a type in which a preset value is set on the sales management machine side, at the time of preset refueling, the preset value is predicted and displayed on the display means. Since the value can be made to coincide with the preset value, it is possible to eliminate the discrepancy between the actual refueling amount and the refueling slip, and to enhance the trusting relationship with the customer.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram of a refueling device, FIG. 2 is a circuit configuration diagram of a control circuit, FIG. 3 is a flow chart showing a processing operation of a preset refueling determination circuit, and FIG. 4 is a processing operation of a preset value prediction circuit. FIG. 5 is a flowchart showing the processing operation of the display control circuit. 1 ... Weighing machine, 2 ... Piping, 3 ... Pump motor, 4 ... Pump, 5 ... Flow meter, 7 ... Lubrication amount indicator, 8 ... Hose, 9 ...
Refueling nozzle, 11 ... Nozzle switch, 12 ... Sales management machine, 19
... Signal line, 20 ... Control circuit, 22 ... Lubrication amount counting circuit, 23 ... Preset lubrication determination circuit, 24 ... Preset value prediction circuit, 25
... Display control circuit.

Claims (1)

[Claims] 1. A liquid supply means for starting and stopping liquid supply, a measuring means for measuring the amount of oil supply supplied by the liquid supply means, and a display means for displaying the amount of oil supply measured by the measuring means. And a discharging device for discharging the oil liquid sent by the liquid sending device, and a refueling work detecting device for detecting the start and end of the refueling work by the discharging device. And a function for calculating a metering signal based on the measurement result of the measuring means as a refueling amount, and setting a desired preset value during preset refueling, and the refueling amount by refueling this time is more than the preset value. It has a sales management machine having a function of outputting a refueling stop signal when it reaches a predetermined value which is smaller by an amount corresponding to the passing amount, and at the time of preset refueling, the liquid feeding means is operated by the refueling stop signal from the sales management machine. In the refueling device that can be stopped, the weighing machine side monitors the input of the refueling work end signal from the refueling work detection means and the refueling stop signal from the sales management machine, and the refueling stop signal is sent first. When input, the present refueling is determined to be preset refueling, and when the preset refueling determination means determines that the current refueling is preset refueling, the preset value is predicted based on the refueling amount by the measuring means. A preset value predicting means, provided between the measuring means and the displaying means, and when the preset refueling determining means determines the refueling this time as preset refueling, the preset value predicted by the predicting means for the display value on the display means And a display control means for holding the preset value. .